Radeon R9 390 and GeForce MX450 30.5W 8Gbps - video card comparison
Radeon R9 390
GeForce MX450 30.5W 8Gbps
Architecture
GCN 2.0 (2013−2017)
Turing (2018−2021)
GPU code name
Grenada
TU117
Market segment
Desktop
Desktop
Release date
June 2015
August 2020
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x4
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
None
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
1275 MHz
Floating-point performance
5,120 gflops
-
Manufacturing process technology
28 nm
12 nm
Number of transistors
6,200 million
4,700 million
Pipelines / CUDA cores
2560
896
Power consumption (TDP)
275 Watt
31 Watt
Texture fill rate
160.0
71.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
2 GB
Memory bus width
512 Bit
64 Bit
Memory clock speed
1000 MHz
8 GB/s
Memory bandwidth
384 GB/s
64 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12 (12_1)
CUDA
-
7.5
Mantle
+
-
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.3
6.5
Vulkan
+
1.2
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-